Observation 210537: Amanita brunnescens G.F. Atk.
When: 2015-07-18
No herbarium specimen

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The name “aestivalis” was applied to materila like brunnescens, but…
By: R. E. Tulloss (ret)
2015-07-18 18:48:41 EDT (-0400)

staining extremely slowly with a cap that was all white or with a yellowish tint in the center of an otherwise white cap. I don’t think the name applies in this case.

The Canadian mycologist, Dr. Rene Pomerleau, observed that there was not taxonomic value to separation of A. brunnescens from its var. pallida. I published a picture of differently colored caps from a single fairy ring on the WAO website and suggested that this image supported Dr. Pomerleau’s observation.

In the last two years, primarily working with Dr. Karen Hughes, we found that all of the material we sampled of A. brunnescens was essentially identical independent of the variations on cap color.

I suggest that “var. pallida” no longer be used because of both macroscopic and molecular observations.

As a consequence, I suggest the name brunnescens for the material in Eva’s images.

Very best,

Rod

Created: 2015-07-18 15:40:50 EDT (-0400)
Last modified: 2015-07-18 19:20:36 EDT (-0400)
Viewed: 24 times, last viewed: 2016-10-21 15:46:32 EDT (-0400)
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